WPSBot/games/casino.py

"""赌场游戏模块"""
import logging
import random
from typing import List
from games.base import BaseGame
from utils.parser import CommandParser
from core.database import get_db

logger = logging.getLogger(__name__)


class CasinoGame(BaseGame):
    """赌场游戏"""
    
    def __init__(self):
        """初始化游戏"""
        super().__init__()
        self.db = get_db()
    
    async def handle(self, command: str, chat_id: int, user_id: int) -> str:
        """处理赌场指令
        
        Args:
            command: 完整指令
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        try:
            # 提取参数
            _, args = CommandParser.extract_command_args(command)
            args = args.strip().lower()
            
            # 没有参数，显示帮助
            if not args:
                return self.get_help()
            
            # 解析第一个参数为游戏类型
            parts = args.split(maxsplit=1)
            game_type = parts[0]
            sub_args = parts[1] if len(parts) > 1 else ""
            
            # 根据游戏类型分发
            if game_type == '大小':
                return await self._handle_bigsmall(sub_args, chat_id, user_id)
            elif game_type == '轮盘':
                return await self._handle_roulette(sub_args, chat_id, user_id)
            elif game_type in ['21点', 'blackjack', '21']:
                return await self._handle_blackjack(sub_args, chat_id, user_id)
            elif game_type in ['help', '帮助']:
                return self.get_help()
            else:
                return f"❌ 暂不支持的游戏类型: {game_type}\n\n支持的类型：大小、轮盘、21点"
                
        except Exception as e:
            logger.error(f"处理赌场指令错误: {e}", exc_info=True)
            return f"❌ 处理指令出错: {str(e)}"
    
    async def _handle_bigsmall(self, args: str, chat_id: int, user_id: int) -> str:
        """处理大小游戏
        
        Args:
            args: 子命令和参数
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        if not args:
            return self._get_bigsmall_help()
        
        # 解析子命令
        parts = args.split(maxsplit=1)
        action = parts[0].lower()
        sub_args = parts[1] if len(parts) > 1 else ""
        
        if action in ['open', '开启', '开始']:
            return await self._open_bigsmall(sub_args, chat_id, user_id)
        elif action in ['bet', '下注', '押']:
            return await self._bet_bigsmall(sub_args, chat_id, user_id)
        elif action in ['status', '状态', '查看']:
            return await self._status_bigsmall(chat_id)
        elif action in ['settle', '结算', '开奖']:
            return await self._settle_bigsmall(sub_args, chat_id, user_id)
        elif action in ['cancel', '放弃', '关闭']:
            return await self._cancel_bigsmall(chat_id, user_id)
        elif action in ['help', '帮助']:
            return self._get_bigsmall_help()
        else:
            return f"❌ 未知命令: {action}\n\n{self._get_bigsmall_help()}"
    
    async def _open_bigsmall(self, args: str, chat_id: int, user_id: int) -> str:
        """庄家开启大小游戏
        
        Args:
            args: 参数字符串 "<最小下注> <最大下注> <赔率>"
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        try:
            # 解析参数
            parts = args.split()
            if len(parts) != 3:
                return "❌ 参数格式错误！\n\n正确格式：`.赌场 大小 open <最小下注> <最大下注> <赔率>`\n\n示例：`.赌场 大小 open 10 100 2.0`"
            
            try:
                min_bet = int(parts[0])
                max_bet = int(parts[1])
                multiplier = float(parts[2])
            except ValueError:
                return "❌ 参数必须是数字！"
            
            # 参数验证
            if min_bet <= 0 or max_bet <= 0:
                return "❌ 下注金额必须大于0！"
            
            if min_bet > max_bet:
                return "❌ 最小下注不能大于最大下注！"
            
            if multiplier <= 0:
                return "❌ 赔率必须大于0！"
            
            if max_bet > 10000:
                return "❌ 最大下注不能超过10000分！"
            
            # 检查是否已有活跃游戏（单场限制）
            existing = self.db.get_any_active_casino_session(chat_id)
            if existing:
                return f"⚠️ 当前已有进行中的游戏（{existing['game_type']}），请先结算后再开启新游戏。"
            
            # 创建游戏会话
            session_id = self.db.create_casino_session(
                chat_id=chat_id,
                game_type='大小',
                banker_id=user_id,
                min_bet=min_bet,
                max_bet=max_bet,
                multiplier=multiplier,
                house_fee=0.05  # 固定5%抽水
            )
            
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 大小游戏已开启\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**最小下注**：{min_bet} 分\n\n"
            text += f"**最大下注**：{max_bet} 分\n\n"
            text += f"**赔率**：{multiplier} 倍\n\n"
            text += f"**抽水率**：5%\n\n"
            text += "---\n\n"
            text += "💡 提示：玩家可以使用 `.赌场 大小 bet <大/小> <金额>` 进行下注"
            
            return text
            
        except Exception as e:
            logger.error(f"开启游戏失败: {e}", exc_info=True)
            return f"❌ 开启游戏失败: {str(e)}"
    
    async def _bet_bigsmall(self, args: str, chat_id: int, user_id: int) -> str:
        """玩家下注
        
        Args:
            args: 参数字符串 "<大/小> <下注金额>"
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        try:
            # 解析参数
            parts = args.split()
            if len(parts) != 2:
                return "❌ 参数格式错误！\n\n正确格式：`.赌场 大小 bet <大/小> <下注金额>`\n\n示例：`.赌场 大小 bet 大 50`"
            
            bet_type = parts[0]
            try:
                amount = int(parts[1])
            except ValueError:
                return "❌ 下注金额必须是数字！"
            
            # 验证下注类型
            if bet_type not in ['大', '小']:
                return f"❌ 下注类型错误！只支持'大'或'小'，您输入的是：{bet_type}"
            
            # 检查是否有活跃的会话
            session = self.db.get_active_casino_session(chat_id, '大小')
            if not session:
                return "❌ 当前没有进行中的游戏，请等待庄家开启游戏。"
            
            # 验证下注金额
            if amount < session['min_bet']:
                return f"❌ 下注金额太小！最小下注：{session['min_bet']} 分"
            
            if amount > session['max_bet']:
                return f"❌ 下注金额太大！最大下注：{session['max_bet']} 分"
            
            # 检查用户积分
            user_points = self.db.get_user_points(user_id)
            if user_points['points'] < amount:
                return f"❌ 积分不足！需要 {amount} 分，当前可用 {user_points['points']} 分"
            
            # 扣除积分
            if not self.db.consume_points(user_id, amount, 'casino_bet', f"大小游戏下注{bet_type}"):
                return "❌ 扣除积分失败！"
            
            # 记录下注
            bet_id = self.db.create_casino_bet(
                chat_id=chat_id,
                game_type='大小',
                user_id=user_id,
                bet_type=bet_type,
                amount=amount,
                multiplier=session['multiplier']
            )
            
            # 获取更新后的积分
            updated_points = self.db.get_user_points(user_id)
            
            text = f"## 🎲 下注成功\n\n"
            text += f"**下注类型**：{bet_type}\n\n"
            text += f"**下注金额**：{amount} 分\n\n"
            text += f"**赔率**：{session['multiplier']} 倍\n\n"
            text += f"**剩余积分**：{updated_points['points']} 分\n\n"
            text += "---\n\n"
            text += "💡 等待庄家结算结果..."
            
            return text
            
        except Exception as e:
            logger.error(f"下注失败: {e}", exc_info=True)
            return f"❌ 下注失败: {str(e)}"
    
    async def _status_bigsmall(self, chat_id: int) -> str:
        """查看当前游戏状态
        
        Args:
            chat_id: 会话ID
            
        Returns:
            状态消息
        """
        session = self.db.get_active_casino_session(chat_id, '大小')
        if not session:
            return "❌ 当前没有进行中的大小游戏"
        
        # 获取所有待结算下注
        bets = self.db.get_pending_bets(chat_id, '大小')
        
        # 统计下注情况
        bet_big = sum(b['amount'] for b in bets if b['bet_type'] == '大')
        bet_small = sum(b['amount'] for b in bets if b['bet_type'] == '小')
        
        banker_display_name = self.db.get_user_display_name(session['banker_id'])
        text = f"## 🎰 大小游戏状态\n\n"
        text += f"**庄家**：{banker_display_name}\n\n"
        text += f"**最小下注**：{session['min_bet']} 分\n\n"
        text += f"**最大下注**：{session['max_bet']} 分\n\n"
        text += f"**赔率**：{session['multiplier']} 倍\n\n"
        text += "---\n\n"
        text += f"**当前下注统计**：\n"
        text += f"- 压大：{bet_big} 分（{len([b for b in bets if b['bet_type'] == '大'])}注）\n"
        text += f"- 压小：{bet_small} 分（{len([b for b in bets if b['bet_type'] == '小'])}注）\n"
        text += f"- 总下注：{len(bets)} 注\n\n"
        text += "---\n\n"
        text += "💡 庄家可以使用 `.赌场 大小 settle` 结算"
        
        return text
    
    async def _settle_bigsmall(self, args: str, chat_id: int, user_id: int) -> str:
        """庄家结算游戏（系统随机生成结果）
        
        Args:
            args: 无参数
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            结算结果消息
        """
        try:
            # 不需要参数，系统自动随机生成结果
            # 使用系统随机数决定大小（50%概率）
            result = '大' if random.random() > 0.5 else '小'
            
            # 结算
            settlement = self.db.settle_casino_bets(chat_id, '大小', result, user_id)
            
            # 构建结算报告
            text = f"## 🎰 大小游戏结算\n\n"
            text += f"**结算结果**：🎲 {result}\n\n"
            text += "---\n\n"
            text += f"**赢家**：{len(settlement['winners'])} 人\n"
            text += f"**输家**：{len(settlement['losers'])} 人\n\n"
            
            # 显示赢家详情
            if settlement['winners']:
                text += "**赢家明细**：\n"
                for winner in settlement['winners']:
                    winner_display_name = self.db.get_user_display_name(winner['user_id'])
                    text += f"- {winner_display_name}: 下注{winner['amount']}分，赢得{winner['win_amount']}分\n"
                text += "\n"
            
            # 显示输家详情
            if settlement['losers']:
                text += "**输家明细**：\n"
                for loser in settlement['losers']:
                    loser_display_name = self.db.get_user_display_name(loser['user_id'])
                    text += f"- {loser_display_name}: 下注{loser['amount']}分\n"
                text += "\n"
            
            text += "---\n\n"
            text += "✅ 游戏已结束，欢迎再次游戏！"
            
            return text
            
        except ValueError as e:
            return f"❌ {str(e)}"
        except Exception as e:
            logger.error(f"结算失败: {e}", exc_info=True)
            return f"❌ 结算失败: {str(e)}"
    
    async def _cancel_bigsmall(self, chat_id: int, user_id: int) -> str:
        """庄家放弃本轮游戏
        
        Args:
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            放弃结果消息
        """
        try:
            # 检查是否有活跃的会话
            session = self.db.get_active_casino_session(chat_id, '大小')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            # 验证是否为庄家
            if session['banker_id'] != user_id:
                return "❌ 只有庄家可以放弃游戏"
            
            # 获取所有待结算下注
            bets = self.db.get_pending_bets(chat_id, '大小')
            
            # 返还所有下注的积分
            return_amount = 0
            for bet in bets:
                # 返还积分
                self.db.add_points(bet['user_id'], bet['amount'], 'casino_cancel', 
                                 "庄家放弃游戏，返还下注")
                return_amount += bet['amount']
            
            # 关闭会话（不结算，返还积分）
            self.db.close_casino_session(chat_id, '大小')
            
            # 标记下注为已取消
            cursor = self.db.conn.cursor()
            cursor.execute("""
                UPDATE casino_bets 
                SET status = 'cancelled'
                WHERE chat_id = ? AND game_type = ? AND status = 'pending'
            """, (chat_id, '大小'))
            
            # 构建报告
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 游戏已放弃\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**总返还积分**：{return_amount} 分\n\n"
            text += f"**返还人数**：{len(bets)} 人\n\n"
            text += "---\n\n"
            text += "✅ 所有下注已返还，游戏已关闭"
            
            return text
            
        except Exception as e:
            logger.error(f"放弃游戏失败: {e}", exc_info=True)
            return f"❌ 放弃游戏失败: {str(e)}"
    
    def _get_bigsmall_help(self) -> str:
        """获取大小游戏帮助信息"""
        return """## 🎰 大小游戏帮助

### 庄家命令
- `.赌场 大小 open <最小> <最大> <赔率>` - 开启游戏
  - 示例：`.赌场 大小 open 10 100 2.0`
- `.赌场 大小 settle` - 结算游戏（系统随机生成结果）
- `.赌场 大小 cancel` - 放弃游戏（返还所有下注）

### 玩家命令
- `.赌场 大小 bet <大/小> <金额>` - 下注
  - 示例：`.赌场 大小 bet 大 50`
  - 示例：`.赌场 大小 bet 小 30`

### 通用命令
- `.赌场 大小 status` - 查看当前状态

### 游戏规则
- 玩家下注后积分立即扣除
- 结算后根据结果发放奖励
- 庄家放弃游戏时，所有下注全额返还
- 系统抽水5%
- 赔率由庄家设置
"""
    
    def get_help(self) -> str:
        """获取帮助信息"""
        text = "# 🎰 赌场游戏帮助\n\n"
        text += self._get_bigsmall_help() + "\n\n"
        text += self._get_roulette_help() + "\n\n"
        text += self._get_blackjack_help()
        return text
    
    # ===== 轮盘游戏 =====
    
    async def _handle_roulette(self, args: str, chat_id: int, user_id: int) -> str:
        """处理轮盘游戏
        
        Args:
            args: 子命令和参数
            chat_id: 会话ID
            user_id: 用户ID
            
        Returns:
            回复消息
        """
        if not args:
            return self._get_roulette_help()
        
        parts = args.split(maxsplit=1)
        action = parts[0].lower()
        sub_args = parts[1] if len(parts) > 1 else ""
        
        if action in ['open', '开启', '开始']:
            return await self._open_roulette(sub_args, chat_id, user_id)
        elif action in ['bet', '下注', '押']:
            return await self._bet_roulette(sub_args, chat_id, user_id)
        elif action in ['status', '状态', '查看']:
            return await self._status_roulette(chat_id)
        elif action in ['settle', '结算', '开奖']:
            return await self._settle_roulette(chat_id, user_id)
        elif action in ['cancel', '放弃', '关闭']:
            return await self._cancel_roulette(chat_id, user_id)
        elif action in ['help', '帮助']:
            return self._get_roulette_help()
        else:
            return f"❌ 未知命令: {action}\n\n{self._get_roulette_help()}"
    
    async def _open_roulette(self, args: str, chat_id: int, user_id: int) -> str:
        """庄家开启轮盘游戏"""
        try:
            parts = args.split()
            if len(parts) != 2:
                return "❌ 参数格式错误！\n\n正确格式：`.赌场 轮盘 open <最小下注> <最大下注>`\n\n示例：`.赌场 轮盘 open 10 100`"
            
            try:
                min_bet = int(parts[0])
                max_bet = int(parts[1])
            except ValueError:
                return "❌ 参数必须是数字！"
            
            if min_bet <= 0 or max_bet <= 0:
                return "❌ 下注金额必须大于0！"
            
            if min_bet > max_bet:
                return "❌ 最小下注不能大于最大下注！"
            
            if max_bet > 10000:
                return "❌ 最大下注不能超过10000分！"
            
            existing = self.db.get_any_active_casino_session(chat_id)
            if existing:
                return f"⚠️ 当前已有进行中的游戏（{existing['game_type']}），请先结算后再开启新游戏。"
            
            session_id = self.db.create_casino_session(
                chat_id=chat_id,
                game_type='轮盘',
                banker_id=user_id,
                min_bet=min_bet,
                max_bet=max_bet,
                multiplier=1.0,  # 轮盘赔率根据下注类型自动计算
                house_fee=0.05
            )
            
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 轮盘游戏已开启\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**最小下注**：{min_bet} 分\n\n"
            text += f"**最大下注**：{max_bet} 分\n\n"
            text += f"**抽水率**：5%\n\n"
            text += "**赔率**：\n"
            text += "- 数字：35倍\n"
            text += "- 颜色/奇偶/大小：2倍\n"
            text += "- 区间：3倍\n\n"
            text += "---\n\n"
            text += "💡 提示：玩家可以使用 `.赌场 轮盘 bet <类型> <选项> <金额>` 进行下注"
            
            return text
            
        except Exception as e:
            logger.error(f"开启轮盘游戏失败: {e}", exc_info=True)
            return f"❌ 开启游戏失败: {str(e)}"
    
    async def _bet_roulette(self, args: str, chat_id: int, user_id: int) -> str:
        """玩家下注轮盘"""
        try:
            parts = args.split()
            if len(parts) < 2:
                return "❌ 参数格式错误！\n\n正确格式：`.赌场 轮盘 bet <类型> <选项> <金额>`\n\n示例：`.赌场 轮盘 bet 数字 17 100`"
            
            bet_category = parts[0]
            if len(parts) == 2:
                # 颜色/奇偶/大小/区间下注：bet <类型> <金额>
                bet_value = bet_category
                bet_category_map = {
                    '红色': '颜色', '黑色': '颜色', '绿色': '颜色',
                    '奇数': '奇偶', '偶数': '奇偶',
                    '大': '大小', '小': '大小',
                    '1-12': '区间', '13-24': '区间', '25-36': '区间'
                }
                bet_category = bet_category_map.get(bet_value)
                if not bet_category:
                    return f"❌ 未知的下注类型: {bet_value}"
                try:
                    amount = int(parts[1])
                except ValueError:
                    return "❌ 下注金额必须是数字！"
                bet_number = None
            elif len(parts) == 3:
                # 数字下注：bet 数字 <数字> <金额>
                if bet_category != '数字':
                    return "❌ 数字下注格式：`.赌场 轮盘 bet 数字 <0-36> <金额>`"
                try:
                    bet_number = int(parts[1])
                    amount = int(parts[2])
                except ValueError:
                    return "❌ 数字和金额必须是数字！"
                
                if bet_number < 0 or bet_number > 36:
                    return "❌ 数字必须在0-36之间！"
                bet_value = None
            else:
                return "❌ 参数格式错误！"
            
            session = self.db.get_active_casino_session(chat_id, '轮盘')
            if not session:
                return "❌ 当前没有进行中的游戏，请等待庄家开启游戏。"
            
            if amount < session['min_bet']:
                return f"❌ 下注金额太小！最小下注：{session['min_bet']} 分"
            
            if amount > session['max_bet']:
                return f"❌ 下注金额太大！最大下注：{session['max_bet']} 分"
            
            user_points = self.db.get_user_points(user_id)
            if user_points['points'] < amount:
                return f"❌ 积分不足！需要 {amount} 分，当前可用 {user_points['points']} 分"
            
            # 根据下注类型计算赔率
            if bet_category == '数字':
                multiplier = 36.0  # 35:1赔率，返回36倍（包含本金）
            elif bet_category in ['颜色', '奇偶', '大小']:
                multiplier = 2.0
            elif bet_category == '区间':
                multiplier = 3.0
            else:
                return f"❌ 未知的下注类别: {bet_category}"
            
            if not self.db.consume_points(user_id, amount, 'casino_bet', f"轮盘游戏下注{bet_category}"):
                return "❌ 扣除积分失败！"
            
            bet_id = self.db.create_casino_bet(
                chat_id=chat_id,
                game_type='轮盘',
                user_id=user_id,
                bet_type='轮盘',
                amount=amount,
                multiplier=multiplier,
                bet_category=bet_category,
                bet_number=bet_number,
                bet_value=bet_value
            )
            
            updated_points = self.db.get_user_points(user_id)
            
            text = f"## 🎲 下注成功\n\n"
            text += f"**下注类型**：{bet_category}"
            if bet_number is not None:
                text += f" - {bet_number}"
            elif bet_value:
                text += f" - {bet_value}"
            text += f"\n\n**下注金额**：{amount} 分\n\n"
            text += f"**赔率**：{multiplier} 倍\n\n"
            text += f"**剩余积分**：{updated_points['points']} 分\n\n"
            text += "---\n\n"
            text += "💡 等待庄家结算结果..."
            
            return text
            
        except Exception as e:
            logger.error(f"轮盘下注失败: {e}", exc_info=True)
            return f"❌ 下注失败: {str(e)}"
    
    async def _status_roulette(self, chat_id: int) -> str:
        """查看轮盘游戏状态"""
        session = self.db.get_active_casino_session(chat_id, '轮盘')
        if not session:
            return "❌ 当前没有进行中的轮盘游戏"
        
        bets = self.db.get_pending_bets(chat_id, '轮盘')
        
        # 统计下注情况
        bet_stats = {}
        for bet in bets:
            category = bet.get('bet_category', '未知')
            value = bet.get('bet_value') or str(bet.get('bet_number', ''))
            key = f"{category}-{value}"
            if key not in bet_stats:
                bet_stats[key] = {'amount': 0, 'count': 0}
            bet_stats[key]['amount'] += bet['amount']
            bet_stats[key]['count'] += 1
        
        banker_display_name = self.db.get_user_display_name(session['banker_id'])
        text = f"## 🎰 轮盘游戏状态\n\n"
        text += f"**庄家**：{banker_display_name}\n\n"
        text += f"**最小下注**：{session['min_bet']} 分\n\n"
        text += f"**最大下注**：{session['max_bet']} 分\n\n"
        text += "---\n\n"
        text += f"**当前下注统计**：\n"
        for key, stat in bet_stats.items():
            parts = key.split('-', 1)
            text += f"- {parts[0]}{' - ' + parts[1] if len(parts) > 1 else ''}：{stat['amount']} 分（{stat['count']}注）\n"
        text += f"\n**总下注**：{len(bets)} 注\n\n"
        text += "---\n\n"
        text += "💡 庄家可以使用 `.赌场 轮盘 settle` 结算"
        
        return text
    
    async def _settle_roulette(self, chat_id: int, user_id: int) -> str:
        """庄家结算轮盘游戏（系统随机生成结果）"""
        try:
            # 系统随机生成0-36的数字
            result_number = random.randint(0, 36)
            
            # 结算
            settlement = self.db.settle_casino_bets(
                chat_id, '轮盘', str(result_number), user_id,
                result_number=result_number
            )
            
            # 构建结算报告
            text = f"## 🎰 轮盘游戏结算\n\n"
            text += f"**结算结果**：🎲 **{result_number}**\n\n"
            text += "---\n\n"
            text += f"**赢家**：{len(settlement['winners'])} 人\n"
            text += f"**输家**：{len(settlement['losers'])} 人\n\n"
            
            if settlement['winners']:
                text += "**赢家明细**：\n"
                for winner in settlement['winners']:
                    winner_display_name = self.db.get_user_display_name(winner['user_id'])
                    text += f"- {winner_display_name}: 下注{winner['amount']}分，赢得{winner['win_amount']}分\n"
                text += "\n"
            
            if settlement['losers']:
                text += "**输家明细**：\n"
                for loser in settlement['losers']:
                    loser_display_name = self.db.get_user_display_name(loser['user_id'])
                    text += f"- {loser_display_name}: 下注{loser['amount']}分\n"
                text += "\n"
            
            text += "---\n\n"
            text += "✅ 游戏已结束，欢迎再次游戏！"
            
            return text
            
        except ValueError as e:
            return f"❌ {str(e)}"
        except Exception as e:
            logger.error(f"轮盘结算失败: {e}", exc_info=True)
            return f"❌ 结算失败: {str(e)}"
    
    async def _cancel_roulette(self, chat_id: int, user_id: int) -> str:
        """庄家放弃轮盘游戏"""
        try:
            session = self.db.get_active_casino_session(chat_id, '轮盘')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['banker_id'] != user_id:
                return "❌ 只有庄家可以放弃游戏"
            
            bets = self.db.get_pending_bets(chat_id, '轮盘')
            
            return_amount = 0
            for bet in bets:
                self.db.add_points(bet['user_id'], bet['amount'], 'casino_cancel', 
                                 "庄家放弃游戏，返还下注")
                return_amount += bet['amount']
            
            self.db.close_casino_session(chat_id, '轮盘')
            
            cursor = self.db.conn.cursor()
            cursor.execute("""
                UPDATE casino_bets 
                SET status = 'cancelled'
                WHERE chat_id = ? AND game_type = ? AND status = 'pending'
            """, (chat_id, '轮盘'))
            
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 游戏已放弃\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**总返还积分**：{return_amount} 分\n\n"
            text += f"**返还人数**：{len(bets)} 人\n\n"
            text += "---\n\n"
            text += "✅ 所有下注已返还，游戏已关闭"
            
            return text
            
        except Exception as e:
            logger.error(f"放弃轮盘游戏失败: {e}", exc_info=True)
            return f"❌ 放弃游戏失败: {str(e)}"
    
    def _get_roulette_help(self) -> str:
        """获取轮盘游戏帮助信息"""
        return """## 🎰 轮盘游戏帮助

### 庄家命令
- `.赌场 轮盘 open <最小> <最大>` - 开启游戏
  - 示例：`.赌场 轮盘 open 10 100`
- `.赌场 轮盘 settle` - 结算游戏（系统随机生成0-36）
- `.赌场 轮盘 cancel` - 放弃游戏（返还所有下注）

### 玩家命令
- `.赌场 轮盘 bet <类型> <选项> <金额>` - 下注
  - 数字：`.赌场 轮盘 bet 数字 17 100` （押数字17，100分，35倍赔率）
  - 颜色：`.赌场 轮盘 bet 红色 50` （押红色，50分，2倍赔率）
  - 奇偶：`.赌场 轮盘 bet 奇数 30` （押奇数，30分，2倍赔率）
  - 大小：`.赌场 轮盘 bet 大 40` （押大19-36，40分，2倍赔率）
  - 区间：`.赌场 轮盘 bet 1-12 60` （押1-12，60分，3倍赔率）

### 通用命令
- `.赌场 轮盘 status` - 查看当前状态

### 游戏规则
- 数字0-36，0为绿色，其他数字为红色或黑色
- 数字下注：35倍赔率
- 颜色/奇偶/大小：2倍赔率
- 区间（1-12/13-24/25-36）：3倍赔率
- 系统抽水5%"""
    
    # ===== 21点游戏 =====
    
    async def _handle_blackjack(self, args: str, chat_id: int, user_id: int) -> str:
        """处理21点游戏"""
        if not args:
            return self._get_blackjack_help()
        
        parts = args.split(maxsplit=1)
        action = parts[0].lower()
        sub_args = parts[1] if len(parts) > 1 else ""
        
        if action in ['open', '开启', '开始']:
            return await self._open_blackjack(sub_args, chat_id, user_id)
        elif action in ['join', '加入']:
            return await self._join_blackjack(chat_id, user_id)
        elif action in ['bet', '下注', '押', '加注']:
            return await self._bet_blackjack(sub_args, chat_id, user_id)
        elif action in ['deal', '发牌']:
            return await self._deal_blackjack(chat_id, user_id)
        elif action in ['hit', '要牌']:
            return await self._hit_blackjack(chat_id, user_id)
        elif action in ['stand', '停牌']:
            return await self._stand_blackjack(chat_id, user_id)
        elif action in ['status', '状态', '查看']:
            return await self._status_blackjack(chat_id)
        elif action in ['settle', '结算']:
            return await self._settle_blackjack(chat_id, user_id)
        elif action in ['cancel', '放弃', '关闭']:
            return await self._cancel_blackjack(chat_id, user_id)
        elif action in ['help', '帮助']:
            return self._get_blackjack_help()
        else:
            return f"❌ 未知命令: {action}\n\n{self._get_blackjack_help()}"
    
    async def _open_blackjack(self, args: str, chat_id: int, user_id: int) -> str:
        """庄家开启21点游戏"""
        try:
            parts = args.split()
            if len(parts) < 2:
                return "❌ 参数格式错误！\n\n正确格式：`.赌场 21点 open <底注> <黑杰克倍数>`\n\n示例：`.赌场 21点 open 50 1.5`"
            
            try:
                base_bet = int(parts[0])
                blackjack_multiplier = float(parts[1])
            except ValueError:
                return "❌ 参数必须是数字！"
            
            if base_bet <= 0:
                return "❌ 底注必须大于0！"
            
            if base_bet > 10000:
                return "❌ 底注不能超过10000分！"
            
            if blackjack_multiplier <= 0:
                return "❌ 黑杰克倍数必须大于0！"
            
            existing = self.db.get_any_active_casino_session(chat_id)
            if existing:
                return f"⚠️ 当前已有进行中的游戏（{existing['game_type']}），请先结算后再开启新游戏。"
            
            session_id = self.db.create_casino_session(
                chat_id=chat_id,
                game_type='21点',
                banker_id=user_id,
                min_bet=base_bet,  # 底注作为最小下注
                max_bet=base_bet * 10,  # 最大下注设为底注的10倍
                multiplier=1.0,  # 21点标准赔率1:1
                house_fee=0.05,
                current_phase='betting',
                blackjack_multiplier=blackjack_multiplier
            )
            
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 21点游戏已开启\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**底注**：{base_bet} 分\n\n"
            text += f"**黑杰克倍数**：{blackjack_multiplier} 倍\n\n"
            text += f"**抽水率**：5%\n\n"
            text += "---\n\n"
            text += f"💡 提示：玩家使用 `.赌场 21点 join` 加入游戏（需要至少{base_bet}分积分）"
            
            return text
            
        except Exception as e:
            logger.error(f"开启21点游戏失败: {e}", exc_info=True)
            return f"❌ 开启游戏失败: {str(e)}"
    
    async def _join_blackjack(self, chat_id: int, user_id: int) -> str:
        """玩家加入21点游戏"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏，请等待庄家开启游戏。"
            
            if session['current_phase'] != 'betting':
                return "❌ 当前不是加入阶段，游戏已开始。"
            
            # 检查是否已经加入
            bets = self.db.get_pending_bets(chat_id, '21点')
            existing_bet = next((b for b in bets if b['user_id'] == user_id), None)
            if existing_bet:
                return f"❌ 您已经加入游戏，当前下注：{existing_bet['amount']} 分"
            
            base_bet = session['min_bet']
            
            # 检查积分是否足够底注
            user_points = self.db.get_user_points(user_id)
            if user_points['points'] < base_bet:
                return f"❌ 积分不足！需要至少 {base_bet} 分才能加入，当前可用 {user_points['points']} 分"
            
            # 扣除底注
            if not self.db.consume_points(user_id, base_bet, 'casino_bet', "21点游戏加入（底注）"):
                return "❌ 扣除积分失败！"
            
            # 创建下注记录（使用底注）
            bet_id = self.db.create_casino_bet(
                chat_id=chat_id,
                game_type='21点',
                user_id=user_id,
                bet_type='标准',
                amount=base_bet,
                multiplier=1.0,  # 标准赔率1:1
                hand_status='playing'
            )
            
            updated_points = self.db.get_user_points(user_id)
            player_name = self.db.get_user_display_name(user_id)
            text = f"## 🎲 加入成功\n\n"
            text += f"**玩家**：{player_name}\n\n"
            text += f"**底注**：{base_bet} 分\n\n"
            text += f"**剩余积分**：{updated_points['points']} 分\n\n"
            text += "---\n\n"
            text += "💡 等待庄家发牌..."
            
            return text
            
        except Exception as e:
            logger.error(f"21点加入失败: {e}", exc_info=True)
            return f"❌ 加入失败: {str(e)}"
    
    async def _bet_blackjack(self, args: str, chat_id: int, user_id: int) -> str:
        """玩家加注（游戏中加注）"""
        try:
            try:
                amount = int(args.strip())
            except ValueError:
                return "❌ 加注金额必须是数字！\n\n正确格式：`.赌场 21点 bet <加注金额>`\n\n加注金额必须不低于底注"
            
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏。"
            
            if session['current_phase'] != 'playing':
                return "❌ 当前不是游戏阶段，无法加注。"
            
            base_bet = session['min_bet']
            if amount < base_bet:
                return f"❌ 加注金额太小！必须不低于底注：{base_bet} 分"
            
            # 检查玩家是否有下注
            bets = self.db.get_pending_bets(chat_id, '21点')
            user_bet = next((b for b in bets if b['user_id'] == user_id), None)
            if not user_bet:
                return "❌ 您没有加入游戏，无法加注"
            
            # 检查玩家手牌状态
            session_id = session['id']
            hand = self.db.get_blackjack_hand(session_id, user_id)
            if not hand or hand['hand_status'] != 'playing':
                return f"❌ 当前手牌状态不允许加注（状态：{hand['hand_status'] if hand else '未找到'}）"
            
            # 检查积分是否足够
            user_points = self.db.get_user_points(user_id)
            if user_points['points'] < amount:
                return f"❌ 积分不足！需要 {amount} 分，当前可用 {user_points['points']} 分"
            
            # 扣除加注金额
            if not self.db.consume_points(user_id, amount, 'casino_bet', "21点游戏加注"):
                return "❌ 扣除积分失败！"
            
            # 更新下注金额
            cursor = self.db.conn.cursor()
            cursor.execute("""
                UPDATE casino_bets 
                SET amount = amount + ?
                WHERE id = ?
            """, (amount, user_bet['id']))
            
            updated_points = self.db.get_user_points(user_id)
            player_name = self.db.get_user_display_name(user_id)
            new_total = user_bet['amount'] + amount
            
            text = f"## 🎲 加注成功\n\n"
            text += f"**玩家**：{player_name}\n\n"
            text += f"**加注金额**：{amount} 分\n\n"
            text += f"**总下注**：{new_total} 分（原底注 {user_bet['amount']} + 加注 {amount}）\n\n"
            text += f"**剩余积分**：{updated_points['points']} 分\n\n"
            text += "---\n\n"
            text += "💡 可以继续要牌或停牌"
            
            return text
            
        except Exception as e:
            logger.error(f"21点加注失败: {e}", exc_info=True)
            return f"❌ 加注失败: {str(e)}"
    
    def _draw_card(self) -> int:
        """抽取一张牌（1-13，其中1=A，11=J，12=Q，13=K）"""
        return random.randint(1, 13)
    
    def _calculate_points(self, cards: List[int]) -> int:
        """计算21点手牌点数（复用数据库方法逻辑）"""
        return self.db._calculate_blackjack_points(cards)
    
    def _check_blackjack(self, cards: List[int]) -> bool:
        """检查是否为黑杰克（A+10/J/Q/K）"""
        if len(cards) != 2:
            return False
        has_ace = 1 in cards
        has_ten = any(card >= 11 for card in cards) or 10 in cards
        return has_ace and has_ten
    
    async def _deal_blackjack(self, chat_id: int, user_id: int) -> str:
        """庄家发初始牌"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['banker_id'] != user_id:
                return "❌ 只有庄家可以发牌"
            
            if session['current_phase'] != 'betting':
                return "❌ 当前阶段不是下注阶段，无法发牌"
            
            bets = self.db.get_pending_bets(chat_id, '21点')
            if not bets:
                return "❌ 还没有玩家下注，无法发牌"
            
            session_id = session['id']
            
            # 标准发牌顺序：
            # 1. 先给每个玩家发一张牌
            # 2. 再给庄家发一张明牌
            # 3. 再给每个玩家发第二张牌
            # 4. 最后给庄家发第二张暗牌
            
            player_hands = {}
            player_first_cards = {}
            
            # 第一轮：给每个玩家发一张牌
            for bet in bets:
                first_card = self._draw_card()
                player_first_cards[bet['user_id']] = [first_card]
            
            # 给庄家发第一张明牌
            banker_first_card = self._draw_card()
            banker_cards = [banker_first_card]
            
            # 第二轮：给每个玩家发第二张牌
            for bet in bets:
                second_card = self._draw_card()
                player_cards = player_first_cards[bet['user_id']] + [second_card]
                player_points = self._calculate_points(player_cards)
                player_status = 'blackjack' if self._check_blackjack(player_cards) else 'playing'
                
                self.db.create_blackjack_hand(session_id, bet['user_id'], player_cards, player_status)
                player_hands[bet['user_id']] = {
                    'cards': player_cards,
                    'points': player_points,
                    'status': player_status
                }
            
            # 给庄家发第二张暗牌
            banker_second_card = self._draw_card()
            banker_cards.append(banker_second_card)
            banker_points = self._calculate_points(banker_cards)
            banker_status = 'blackjack' if self._check_blackjack(banker_cards) else 'playing'
            
            # 存储庄家完整手牌（包含暗牌）
            self.db.create_blackjack_hand(session_id, 0, banker_cards, banker_status)
            
            # 更新session阶段
            cursor = self.db.conn.cursor()
            cursor.execute("""
                UPDATE casino_sessions 
                SET current_phase = 'playing'
                WHERE id = ?
            """, (session_id,))
            
            # 构建发牌结果（庄家只显示明牌）
            text = f"## 🎰 发牌完成\n\n"
            text += f"**庄家手牌**：{self._format_cards([banker_first_card])} ? （隐藏一张暗牌）\n\n"
            
            if banker_status == 'blackjack':
                text += "**庄家黑杰克！**\n\n"
            
            text += "---\n\n"
            text += "**玩家手牌**：\n"
            for user_id, hand in player_hands.items():
                player_name = self.db.get_user_display_name(user_id)
                text += f"- {player_name}：{self._format_cards(hand['cards'])} ({hand['points']}点)"
                if hand['status'] == 'blackjack':
                    text += " **黑杰克！**"
                text += "\n"
            
            text += "\n---\n\n"
            text += "💡 玩家可以使用 `.赌场 21点 hit` 要牌、`.赌场 21点 stand` 停牌或 `.赌场 21点 bet <金额>` 加注"
            
            return text
            
        except Exception as e:
            logger.error(f"21点发牌失败: {e}", exc_info=True)
            return f"❌ 发牌失败: {str(e)}"
    
    def _format_cards(self, cards: List[int]) -> str:
        """格式化手牌显示"""
        card_names = {
            1: 'A',
            11: 'J',
            12: 'Q',
            13: 'K'
        }
        formatted = []
        for card in cards:
            if card in card_names:
                formatted.append(card_names[card])
            else:
                formatted.append(str(card))
        return ' '.join(formatted)
    
    async def _hit_blackjack(self, chat_id: int, user_id: int) -> str:
        """玩家要牌"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['current_phase'] != 'playing':
                return "❌ 当前不是游戏阶段，无法要牌"
            
            # 检查玩家是否有下注
            bets = self.db.get_pending_bets(chat_id, '21点')
            user_bet = next((b for b in bets if b['user_id'] == user_id), None)
            if not user_bet:
                return "❌ 您没有下注，无法要牌"
            
            # 获取玩家手牌
            session_id = session['id']
            hand = self.db.get_blackjack_hand(session_id, user_id)
            if not hand:
                return "❌ 未找到手牌信息"
            
            if hand['hand_status'] != 'playing':
                return f"❌ 当前手牌状态为：{hand['hand_status']}，无法要牌"
            
            # 抽一张新牌
            new_card = self._draw_card()
            cards = hand['hand_data'] + [new_card]
            points = self._calculate_points(cards)
            
            # 判断状态
            if points > 21:
                status = 'busted'
            elif points == 21:
                status = 'stood'
            else:
                status = 'playing'
            
            # 更新手牌
            self.db.update_blackjack_hand(session_id, user_id, cards, status)
            
            player_name = self.db.get_user_display_name(user_id)
            text = f"## 🎲 要牌\n\n"
            text += f"**玩家**：{player_name}\n\n"
            text += f"**新手牌**：{self._format_cards(cards)} ({points}点)\n\n"
            
            if status == 'busted':
                text += "**爆牌！** ❌\n\n"
            elif points == 21:
                text += "**21点！** ✅\n\n"
            
            # 如果爆牌，检查是否所有玩家都已完成
            if status == 'busted':
                all_hands = self.db.get_all_blackjack_hands(session_id)
                bets = self.db.get_pending_bets(chat_id, '21点')
                all_players_done = True
                
                for bet in bets:
                    player_hand = all_hands.get(bet['user_id'])
                    if player_hand and player_hand['hand_status'] == 'playing':
                        all_players_done = False
                        break
                
                if all_players_done:
                    text += "---\n\n"
                    text += "✅ 所有玩家已完成操作，自动结算中...\n\n"
                    # 调用结算方法（使用庄家ID）
                    try:
                        settlement_result = await self._settle_blackjack(chat_id, session['banker_id'])
                        return settlement_result
                    except Exception as e:
                        logger.error(f"自动结算失败: {e}", exc_info=True)
                        text += f"❌ 自动结算失败: {str(e)}"
                        return text
            
            text += "---\n\n"
            if status == 'playing':
                text += "💡 可以继续要牌或停牌"
            elif status == 'stood':
                text += "💡 21点，自动停牌"
            else:
                text += "💡 已爆牌，等待结算"
            
            return text
            
        except Exception as e:
            logger.error(f"21点要牌失败: {e}", exc_info=True)
            return f"❌ 要牌失败: {str(e)}"
    
    async def _stand_blackjack(self, chat_id: int, user_id: int) -> str:
        """玩家停牌"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['current_phase'] != 'playing':
                return "❌ 当前不是游戏阶段，无法停牌"
            
            session_id = session['id']
            hand = self.db.get_blackjack_hand(session_id, user_id)
            if not hand:
                return "❌ 未找到手牌信息"
            
            if hand['hand_status'] != 'playing':
                return f"❌ 当前手牌状态为：{hand['hand_status']}，无法停牌"
            
            # 更新状态为停牌
            self.db.update_blackjack_hand(session_id, user_id, hand['hand_data'], 'stood')
            
            points = self._calculate_points(hand['hand_data'])
            player_name = self.db.get_user_display_name(user_id)
            
            # 检查是否所有玩家都已停牌或爆牌
            all_hands = self.db.get_all_blackjack_hands(session_id)
            bets = self.db.get_pending_bets(chat_id, '21点')
            all_players_done = True
            
            for bet in bets:
                player_hand = all_hands.get(bet['user_id'])
                if player_hand and player_hand['hand_status'] == 'playing':
                    all_players_done = False
                    break
            
            text = f"## 🎲 停牌\n\n"
            text += f"**玩家**：{player_name}\n\n"
            text += f"**最终手牌**：{self._format_cards(hand['hand_data'])} ({points}点)\n\n"
            
            # 如果所有玩家都已完成，自动结算
            if all_players_done:
                text += "---\n\n"
                text += "✅ 所有玩家已完成操作，自动结算中...\n\n"
                # 调用结算方法（使用庄家ID）
                try:
                    settlement_result = await self._settle_blackjack(chat_id, session['banker_id'])
                    return settlement_result
                except Exception as e:
                    logger.error(f"自动结算失败: {e}", exc_info=True)
                    text += f"❌ 自动结算失败: {str(e)}"
                    return text
            else:
                text += "---\n\n"
                text += "💡 已停牌，等待其他玩家操作"
            
            return text
            
        except Exception as e:
            logger.error(f"21点停牌失败: {e}", exc_info=True)
            return f"❌ 停牌失败: {str(e)}"
    
    async def _status_blackjack(self, chat_id: int) -> str:
        """查看21点游戏状态"""
        session = self.db.get_active_casino_session(chat_id, '21点')
        if not session:
            return "❌ 当前没有进行中的21点游戏"
        
        session_id = session['id']
        bets = self.db.get_pending_bets(chat_id, '21点')
        hands = self.db.get_all_blackjack_hands(session_id)
        
        banker_display_name = self.db.get_user_display_name(session['banker_id'])
        text = f"## 🎰 21点游戏状态\n\n"
        text += f"**庄家**：{banker_display_name}\n\n"
        text += f"**当前阶段**：{session['current_phase']}\n\n"
        text += f"**最小下注**：{session['min_bet']} 分\n\n"
        text += f"**最大下注**：{session['max_bet']} 分\n\n"
        text += f"**黑杰克倍数**：{session.get('blackjack_multiplier', 1.5)} 倍\n\n"
        
        # 显示庄家手牌（隐藏暗牌）
        banker_hand = hands.get(0)
        if banker_hand:
            banker_cards = banker_hand['cards']
            if session['current_phase'] == 'playing' and len(banker_cards) >= 2:
                # 游戏阶段：只显示第一张明牌，隐藏暗牌
                visible_card = banker_cards[0]
                text += f"**庄家手牌**：{self._format_cards([visible_card])} ? （隐藏一张暗牌）"
            else:
                # 已结算或发牌前：显示完整手牌
                banker_points = self._calculate_points(banker_cards)
                text += f"**庄家手牌**：{self._format_cards(banker_cards)} ({banker_points}点)"
                if banker_hand['status'] == 'blackjack':
                    text += " **黑杰克！**"
            text += "\n\n"
        
        text += "---\n\n"
        text += f"**玩家下注**：{len(bets)} 人\n\n"
        
        # 显示玩家手牌
        if hands:
            text += "**玩家手牌**：\n"
            for user_id, hand in hands.items():
                if user_id == 0:  # 跳过庄家
                    continue
                player_name = self.db.get_user_display_name(user_id)
                player_bet = next((b for b in bets if b['user_id'] == user_id), None)
                if player_bet:
                    points = self._calculate_points(hand['cards'])
                    text += f"- {player_name}：{self._format_cards(hand['cards'])} ({points}点) - 下注{player_bet['amount']}分"
                    if hand['status'] == 'blackjack':
                        text += " **黑杰克！**"
                    elif hand['status'] == 'busted':
                        text += " **爆牌**"
                    elif hand['status'] == 'stood':
                        text += " **已停牌**"
                    text += "\n"
            text += "\n"
        
        text += "---\n\n"
        if session['current_phase'] == 'betting':
            text += "💡 庄家可以使用 `.赌场 21点 deal` 发牌"
        elif session['current_phase'] == 'playing':
            text += "💡 玩家可以使用 `.赌场 21点 hit` 要牌或 `.赌场 21点 stand` 停牌\n"
            text += "💡 庄家可以使用 `.赌场 21点 settle` 结算"
        else:
            text += "💡 庄家可以使用 `.赌场 21点 settle` 结算"
        
        return text
    
    async def _settle_blackjack(self, chat_id: int, user_id: int) -> str:
        """庄家结算21点游戏"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['banker_id'] != user_id:
                return "❌ 只有庄家可以结算游戏"
            
            if session['current_phase'] == 'betting':
                return "❌ 还未发牌，无法结算"
            
            session_id = session['id']
            hands = self.db.get_all_blackjack_hands(session_id)
            
            # 获取庄家手牌
            banker_hand = hands.get(0, {})
            banker_cards = banker_hand.get('cards', [])
            banker_points = self._calculate_points(banker_cards)
            banker_status = banker_hand.get('status', 'stood')
            
            # 如果庄家还在playing状态，自动要牌到17点以上
            while banker_status == 'playing' and banker_points < 17:
                new_card = self._draw_card()
                banker_cards.append(new_card)
                banker_points = self._calculate_points(banker_cards)
                
                if banker_points > 21:
                    banker_status = 'busted'
                elif banker_points >= 17:
                    banker_status = 'stood'
                
                # 更新庄家手牌
                self.db.update_blackjack_hand(session_id, 0, banker_cards, banker_status)
            
            # 更新hands字典
            hands[0] = {'cards': banker_cards, 'status': banker_status}
            
            #進行结算
            settlement = self.db.settle_casino_bets(
                chat_id, '21点', f"庄家{banker_points}点", user_id,
                hands_dict=hands
            )
            
            # 构建结算报告
            text = f"## 🎰 21点游戏结算\n\n"
            text += f"**庄家最终手牌**：{self._format_cards(banker_cards)} ({banker_points}点)\n\n"
            
            if banker_status == 'blackjack':
                text += "**庄家黑杰克！**\n\n"
            elif banker_status == 'busted':
                text += "**庄家爆牌！**\n\n"
            
            text += "---\n\n"
            text += f"**赢家**：{len(settlement['winners'])} 人\n"
            text += f"**输家**：{len(settlement['losers'])} 人\n\n"
            
            if settlement['winners']:
                text += "**赢家明细**：\n"
                for winner in settlement['winners']:
                    winner_display_name = self.db.get_user_display_name(winner['user_id'])
                    player_hand = hands.get(winner['user_id'], {})
                    player_points = self._calculate_points(player_hand.get('cards', []))
                    text += f"- {winner_display_name}: {self._format_cards(player_hand.get('cards', []))} ({player_points}点) - 下注{winner['amount']}分，赢得{winner['win_amount']}分\n"
                text += "\n"
            
            if settlement['losers']:
                text += "**输家明细**：\n"
                for loser in settlement['losers']:
                    loser_display_name = self.db.get_user_display_name(loser['user_id'])
                    player_hand = hands.get(loser['user_id'], {})
                    player_points = self._calculate_points(player_hand.get('cards', []))
                    text += f"- {loser_display_name}: {self._format_cards(player_hand.get('cards', []))} ({player_points}点) - 下注{loser['amount']}分\n"
                text += "\n"
            
            text += "---\n\n"
            text += "✅ 游戏已结束，欢迎再次游戏！"
            
            return text
            
        except ValueError as e:
            return f"❌ {str(e)}"
        except Exception as e:
            logger.error(f"21点结算失败: {e}", exc_info=True)
            return f"❌ 结算失败: {str(e)}"
    
    async def _cancel_blackjack(self, chat_id: int, user_id: int) -> str:
        """庄家放弃21点游戏"""
        try:
            session = self.db.get_active_casino_session(chat_id, '21点')
            if not session:
                return "❌ 当前没有进行中的游戏"
            
            if session['banker_id'] != user_id:
                return "❌ 只有庄家可以放弃游戏"
            
            bets = self.db.get_pending_bets(chat_id, '21点')
            
            return_amount = 0
            for bet in bets:
                self.db.add_points(bet['user_id'], bet['amount'], 'casino_cancel', 
                                 "庄家放弃游戏，返还下注")
                return_amount += bet['amount']
            
            self.db.close_casino_session(chat_id, '21点')
            
            cursor = self.db.conn.cursor()
            cursor.execute("""
                UPDATE casino_bets 
                SET status = 'cancelled'
                WHERE chat_id = ? AND game_type = ? AND status = 'pending'
            """, (chat_id, '21点'))
            
            banker_display_name = self.db.get_user_display_name(user_id)
            text = f"## 🎰 游戏已放弃\n\n"
            text += f"**庄家**：{banker_display_name}\n\n"
            text += f"**总返还积分**：{return_amount} 分\n\n"
            text += f"**返还人数**：{len(bets)} 人\n\n"
            text += "---\n\n"
            text += "✅ 所有下注已返还，游戏已关闭"
            
            return text
            
        except Exception as e:
            logger.error(f"放弃21点游戏失败: {e}", exc_info=True)
            return f"❌ 放弃游戏失败: {str(e)}"
    
    def _get_blackjack_help(self) -> str:
        """获取21点游戏帮助信息"""
        return """## 🎰 21点游戏帮助

### 游戏流程
1. **庄家开启**：`.赌场 21点 open <底注> <黑杰克倍数>`
   - 示例：`.赌场 21点 open 50 1.5`
2. **玩家加入**：`.赌场 21点 join`（需要至少底注的积分）
3. **庄家发牌**：`.赌场 21点 deal`
4. **玩家操作**：要牌、停牌或加注
5. **自动结算**：所有玩家停牌后自动结算

### 庄家命令
- `.赌场 21点 open <底注> <黑杰克倍数>` - 开启游戏
  - 示例：`.赌场 21点 open 50 1.5`
- `.赌场 21点 deal` - 发牌（玩家加入后）
- `.赌场 21点 settle` - 手动结算（可选，会自动结算）
- `.赌场 21点 cancel` - 放弃游戏（返还所有下注）

### 玩家命令
- `.赌场 21点 join` - 加入游戏（扣除底注，需要至少底注的积分）
- `.赌场 21点 bet <金额>` - 加注（游戏中，不低于底注）
  - 示例：`.赌场 21点 bet 50`
- `.赌场 21点 hit` - 要牌
- `.赌场 21点 stand` - 停牌（所有玩家停牌后自动结算）

### 通用命令
- `.赌场 21点 status` - 查看当前状态

### 游戏规则
- **目标**：手牌点数尽可能接近21点但不能超过
- **发牌**：标准发牌顺序，庄家隐藏一张暗牌
- **黑杰克**（A+10/J/Q/K）：赢得设定倍数（默认1.5倍）
- **玩家点数>庄家点数且未爆牌**：赢得1:1
- **平局**：返还下注
- **爆牌**：失去下注
- **庄家规则**：自动要牌到17点以上
- **自动结算**：所有玩家停牌后，最后一名玩家停牌时立即结算
- **系统抽水**：5%"""